80816870 has 16 divisors (see below), whose sum is σ = 145616400. Its totient is φ = 32294304.

The previous prime is 80816839. The next prime is 80816873. The reversal of 80816870 is 7861808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80816873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8156 + ... + 15104.

It is an arithmetic number, because the mean of its divisors is an integer number (9101025).

Almost surely, 2^80816870 is an apocalyptic number.

80816870 is a deficient number, since it is larger than the sum of its proper divisors (64799530).

80816870 is a wasteful number, since it uses less digits than its factorization.

80816870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8119.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 80816870 is about 8989.8203541561. The cubic root of 80816870 is about 432.3485520057.

The spelling of 80816870 in words is "eighty million, eight hundred sixteen thousand, eight hundred seventy".